<template>
    <div class="home-new">  
        <HomePanel title="新鲜好物" sub-title="新鲜出炉 品质靠谱">
            <template #right><CsMore path="/" /></template>
            <div ref="target" style="position: relative;height: 406px;">
            <!-- 面板内容 -->
            <Transition name="fade">
            <ul v-if="goods.length" ref="pannel" class="goods-list">
                <li v-for="item in goods" :key="item.id">
                    <RouterLink :to="`/product/${item.id}`">
                        <img :src="item.picture" alt="">
                        <p class="name ellipsis">{{item.name}}</p>
                        <p class="price">&yen;{{item.price}}</p>
                    </RouterLink>
                </li>
            </ul>
            <HomeSkeleton bg="#f0f9f4" v-else />
            </Transition>
            </div>
        </HomePanel>
    </div>
</template>
<script>
import { ref } from 'vue'
import HomePanel from './home-panel'
import HomeSkeleton from './home-skeleton'
import { findNew } from '@/api/home'
import { useLazyData } from '@/hooks'
import { useIntersectionObserver } from '@vueuse/core'
export default {
    name:'HomeNew',
    components: { HomePanel,HomeSkeleton },
    setup() {
        // const goods =ref([])
        // const box = ref(null)
        // const { stop } = useIntersectionObserver(
        //   box,
        //   ([{ isIntersecting }]) => {
        //     if(isIntersecting) {
        //       stop()
        //       findNew().then(data => {
        //         goods.value = data.result
        //       })
        //     }
        //   }
        // )
        // 1. target 去绑定一个监听对象,最好的DOM
        // 2. 传入API函数，内部获取调用，返回就是响应式数据
        const { target,result } = useLazyData(findNew)
        return { target,goods:result }
    }
}
</script>
<style scoped lang="less">
.goods-list {
  display: flex;
  justify-content: space-between;
  height: 406px;
  li {
    width: 306px;
    height: 406px;
    background: #f0f9f4;
    .hoverShadow();
    img {
      width: 306px;
      height: 306px;
    }
    p {
      font-size: 22px;
      padding: 12px 30px 0 30px;
      text-align: center;
    }
    .price {
      color: @priceColor;
    }
  }
}
</style>